PT - JOURNAL ARTICLE ED - , AID - 10.1136/tc.9.2.250 DP - 2000 Jun 01 TA - Tobacco Control PG - 250--257 VI - 9 IP - 2 4099 - http://tobaccocontrol.bmj.com/content/9/2/250.short 4100 - http://tobaccocontrol.bmj.com/content/9/2/250.full SO - Tob Control2000 Jun 01; 9